AP Psychology Prologue + Chapter 1

2. Descriptive research technique in which a representative, random sample, of people is questioned about their attitudes or behaviors.
5. Most frequently occurring score in a distribution.
7. The bias in which we believe, after learning an outcome, that we could foreseen it.
8. Descriptive research strategy in which one person is studied in great depth.
11. Measure that indicates the extent to which one factor predicts another factor.
12. Measure of central tendency computed by adding the scores in a distribution and dividing by the number of scores.
14. Experimental condition in which the treatment of interest is withheld.
16. Condition in which research participants are exposed to the independent variable being studied.
17. Research method in which behavior is observed and recorded in naturally occurring situations without any manipulation or control.
18. When a research participant's expectations produce the results of an experiment, it is called a _____ effect.
19. Score that falls at the 50th percentile, cutting a distribution in half.
20. Perception of a correlation between two events where none exists.

1. Testable prediction, often implied by a theory.
3. In an experiment, the variable being manipulated and tested by the investigator.
4. Control procedure in which neither the experimenter nor the research participants are aware of which condition is in effect.
6. Depiction of the relationship between two sets of scores by means of a graphed cluster of dots.
9. Sample in which every member of the population has an equal chance of being included.
10. Measure of variation computed as the difference between the highest and lowest scores in a distribution.
11. Careful reasoning that examines assumptions, discerns hidden values, evaluates evidence, and assesses conclusions.
13. A precise definition of the procedures used to identify a variable.
15. Explanation using an integrated set of principles that organizes and predicts behaviors or events.